Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13680 |
Big in the benthos: Future change of seafloor community biomass in a global, body size-resolved model | |
Yool, Andrew; Martin, Adrian P.; Anderson, Thomas R.; Bett, Brian J.; Jones, Daniel O. B.; Ruhl, Henry A. | |
2017-09-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Deep-water benthic communities in the ocean are almost wholly dependent on near-surface pelagic ecosystems for their supply of energy and material resources. Primary production in sunlit surface waters is channelled through complex food webs that extensively recycle organic material, but lose a fraction as particulate organic carbon (POC) that sinks into the ocean interior. This exported production is further rarefied by microbial breakdown in the abyssal ocean, but a residual ultimately drives diverse assemblages of seafloor heterotrophs. Advances have led to an understanding of the importance of size (body mass) in structuring these communities. Here we force a size-resolved benthic biomass model, BORIS, using seafloor POC flux from a coupled ocean-biogeochemistry model, NEMO-MEDUSA, to investigate global patterns in benthic biomass. BORIS resolves 16 size classes of metazoans, successively doubling in mass from approximately 1 mu g to 28 mg. Simulations find a wide range of seasonal responses to differing patterns of POC forcing, with both a decline in seasonal variability, and an increase in peak lag times with increasing body size. However, the dominant factor for modelled benthic communities is the integrated magnitude of POC reaching the seafloor rather than its seasonal pattern. Scenarios of POC forcing under climate change and ocean acidification are then applied to investigate how benthic communities may change under different future conditions. Against a backdrop of falling surface primary production (-6.1%), and driven by changes in pelagic remineralization with depth, results show that while benthic communities in shallow seas generally show higher biomass in a warmed world (+3.2%), deep-sea communities experience a substantial decline (-32%) under a high greenhouse gas emissions scenario. Our results underscore the importance for benthic ecology of reducing uncertainty in the magnitude and seasonality of seafloor POC fluxes, as well as the importance of studying a broader range of seafloor environments for future model development. |
英文关键词 | allometric benthic ecology future global model particulate organic carbon flux seafloor |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406812100013 |
WOS关键词 | EASTERN NORTH PACIFIC ; DEEP-SEA ; CLIMATE-CHANGE ; ORGANIC-CARBON ; MARINE ECOSYSTEMS ; OCEAN ECOSYSTEMS ; METABOLIC THEORY ; FOOD WEBS ; ATLANTIC ; ECOLOGY |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17567 |
专题 | 气候变化 资源环境科学 |
作者单位 | Univ Southampton Waterfront Campus, Natl Oceanog Ctr, Southampton, Hants, England |
推荐引用方式 GB/T 7714 | Yool, Andrew,Martin, Adrian P.,Anderson, Thomas R.,et al. Big in the benthos: Future change of seafloor community biomass in a global, body size-resolved model[J]. GLOBAL CHANGE BIOLOGY,2017,23(9). |
APA | Yool, Andrew,Martin, Adrian P.,Anderson, Thomas R.,Bett, Brian J.,Jones, Daniel O. B.,&Ruhl, Henry A..(2017).Big in the benthos: Future change of seafloor community biomass in a global, body size-resolved model.GLOBAL CHANGE BIOLOGY,23(9). |
MLA | Yool, Andrew,et al."Big in the benthos: Future change of seafloor community biomass in a global, body size-resolved model".GLOBAL CHANGE BIOLOGY 23.9(2017). |
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